<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <div>
        <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
          <el-col :span="8">
            <el-input
              placeholder="请输入内容"
              v-model="queryInfo.query"
              clearable
              @clear="getUserList"
            >
              <el-button
                slot="append"
                icon="el-icon-search"
                @click="getUserList"
              ></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button type="primary" @click="addDialogVisible = true"
              >添加用户</el-button
            >
          </el-col>
        </el-row>
        <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
          <el-table-column type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态">
            <template slot-scope="scope">
              <el-switch
                v-model="scope.row.mg_state"
                @change="userStateChanged(scope.row)"
              >
              </el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作" width="180px">
            <template slot-scope="scope">
              <!-- 修改按钮 -->
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="showEditDialog(scope.row.id)"
              ></el-button>
              <!-- 删除按钮 -->
              <el-button
                type="danger"
                icon="el-icon-delete"
                size="mini"
                @click="removeUserById(scope.row.id)"
              ></el-button>
              <!-- 分配角色按钮 -->
              <el-tooltip
                class="item"
                effect="dark"
                content="分配角色"
                placement="top"
                :enterable="false"
              >
                <el-button
                  type="warning"
                  icon="el-icon-setting"
                  size="mini"
                  @click="setRole(scope.row)"
                ></el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页区域 -->
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        >
        </el-pagination>
      </div>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"> </el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"> </el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"> </el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"> </el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
          <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
          <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo"
          >确 定</el-button
        >
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
  title="分配角色"
  :visible.sync="setRoleDialogVisible"
  width="50%" @close="setRoleDialogClosed">
  <div>
    <p>当前的用户:{{userInfo.username}}</p>
    <p>当前的角色:{{userInfo.role_name}}</p>
    <p>分配新角色:
    <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
    </el-select>
    </p>
  </div>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb()
      }
      cb(new Error(`请输入合法的邮箱`))
    }

    //验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile =
        /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        //合法的手机号
        return cb()
      }
      cb(new Error(`请输入合法的手机号`))
    }

    return {
      //获取用户列表的参数对象
      queryInfo: {
        //查询关键字
        query: '',
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      //添加表单的验证规则对象
      addFormrules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: `用户名的长度在3~10个字符之间`,
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: `用户名的长度在6~15个字符之间`,
            trigger: 'blur',
          },
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' },
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' },
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: '',
      //修改表单的验证规则对象
      editFormRules:{
        email:[
          { required: true, message: '请输入用户邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur'},
        ],
        mobile: [
          { required: true, message: '请输入用户手机', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur'},
        ],
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible:false,
      //需要被分配角色的用户信息
        userInfo:{},
        //所有角色的数据列表
        rolesList:[],
        //已选中的角色Id值
        selectedRoleId:[],
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      if (res.meta.status != 200) {
        return this.$message.error(`获取用户列表失败!`)
      }
      this.userlist = res.data.users
      this.total = res.data.total
      //console.log(res)
    },
    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      //console.log(newSize);
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      //console.log(newPage);
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听switch开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error(`更新用户状态失败! `)
      }
      this.$message.success(`更新用户状态成功! `)
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮,添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        //如果不满足预校验条件则返回
        if (!valid) return
        //可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)

        if (res.meta.status !== 201) {
          this.$message.error(`添加用户失败! `)
        }
        this.$message.success(`添加用户成功! `)
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      //console.log(id)
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error(`查询用户信息失败`)
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭时间
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo(){
      this.$refs.editFormRef.validate(async valid=>{
           if(!valid) return
           //发起修改用户信息的数据请求
        const{data:res} = await this.$http.put(`users/${this.editForm.id}`,{
             email:this.editForm.email,mobile:this.editForm.mobile
             })

             if(res.meta.status !==200){
               return this.$message.error(`更新用户信息失败! `)
             }

             //关闭对话框
             this.editDialogVisible = false;
             //刷新数据列表
             this.getUserList();
             //提示修改成功'
             this.$message.success(`更新用户信息成功! `)
    })
    },
    //根据Id删除对应的用户
   async removeUserById(id){
      //弹框询问用户是否删除数据
     const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
        ).catch(err=>err)
        //如果用户确认删除,则返回值为字符串confirm
        //如果用户取消删除,则返回值为字符串cancel
         //console.log(confirmResult);
         if(confirmResult !=='confirm'){
           return this.$message.info(`已取消删除`)
         }
       const{data:res} = await this.$http.delete(`users/${id}`)

       if(res.meta.status!==200){
         return this.$message.error(`删除用户失败`)
       }
       this.$message.success(`删除用户成功! `)
       this.getUserList()
    },
    //展示分配角色的对话框
    async setRole(userInfo){
      this.userInfo = userInfo;
    //在展示对话框之前,获取所有角色的列表
    const {data:res} = await this.$http.get('roles')
    if(res.meta.status!==200){
      return this.$message.error(`获取角色列表失败! `)
    }
    this.rolesList = res.data;
    this.setRoleDialogVisible = true;
    },
    //点击按钮,分配角色
    async saveRoleInfo(){
     if(!this.selectedRoleId){
       return this.$message.error(`请选择要分配的角色!`)
     }
    const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,
      {rid:this.selectedRoleId})
      if (res.meta.status!==200){
      return this.$message.error(`更新角色失败!`)
      }
    this.$message.success(`更新角色成功!`)
    this.getUserList()
    this.setRoleDialogVisible=false
    },
    //监听分配角色对话框的关闭时间
    setRoleDialogClosed(){
      this.selectedRoleId='';
      this.userInfo='';
    }
  }
}
</script>

<style lang="less" scoped>
</style>